CompressionManager (FITS API)

java.lang.Object
- nom.tam.fits.compress.CompressionManager

public final class CompressionManager
extends java.lang.Object

Field Summary

Fields
Modifier and Type Field and Description

static int ONE_MEGABYTE

Fields
Modifier and Type	Field and Description
`static int`	`ONE_MEGABYTE`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static java.io.InputStream`	`decompress(java.io.InputStream compressed)` This method decompresses a compressed input stream.
`static boolean`	`isCompressed(java.io.File file)` Is a file compressed? (the magic number in the first 2 bytes is used to detect the compression.
`static boolean`	`isCompressed(java.lang.String filename)` Is a file compressed? (the magic number in the first 2 bytes is used to detect the compression.
`protected static ICompressProvider`	`nextCompressionProvider(int mag1, int mag2, ICompressProvider old)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - ONE_MEGABYTE
```
public static final int ONE_MEGABYTE
```
    See Also:
    
    Constant Field Values
- Method Detail
  - decompress
```
public static java.io.InputStream decompress(java.io.InputStream compressed)
                                      throws FitsException
```
    This method decompresses a compressed input stream. The decompression method is selected automatically based upon the first two bytes read.
    
    Parameters:
    
    compressed - The compressed input stream
    
    Returns:
    
    A stream which wraps the input stream and decompresses it. If the input stream is not compressed, a pushback input stream wrapping the original stream is returned.
    
    Throws:
    
    FitsException - when the stream could not be read or decompressed
  - isCompressed
```
public static boolean isCompressed(java.io.File file)
```
    Is a file compressed? (the magic number in the first 2 bytes is used to detect the compression.
    
    Parameters:
    
    file - file to test for compression algorithms
    
    Returns:
    
    true if the file is compressed
  - isCompressed
```
public static boolean isCompressed(java.lang.String filename)
```
    Is a file compressed? (the magic number in the first 2 bytes is used to detect the compression.
    
    Parameters:
    
    filename - of the file to test for compression algorithms
    
    Returns:
    
    true if the file is compressed
  - nextCompressionProvider
```
protected static ICompressProvider nextCompressionProvider(int mag1,
                                                           int mag2,
                                                           ICompressProvider old)
```

Class CompressionManager

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

ONE_MEGABYTE

Method Detail

decompress

isCompressed

isCompressed

nextCompressionProvider